{
    "topk": 2,
    "use_ctx": true,
    "frequency": 64,
    "max_query_length": 64,
    "use_full_input_as_query": true,
    "look_ahead_steps": 64,
    "look_ahead_pre_retrieval": "first",
    "look_ahead_truncate_at_boundary": "sentence",
    "look_ahead_filter_prob": 0.8,
    "look_ahead_mask_prob": 0.4,
    "look_ahead_mask_method": "simple",
    "only_use_look_ahead": true,
    "truncate_at_boundary": "sentence",
    "reinit_ctx": false,
    "use_ctx_for_examplars": "ret"
}